//创建和初始化地图函数：
function initMap() {
  createMap(); //创建地图
  setMapEvent(); //设置地图事件
  addMapControl(); //向地图添加控件
  addMapOverlay(); //向地图添加覆盖物
}

function createMap() {
  map = new BMap.Map("map");
  map.centerAndZoom(new BMap.Point(114.206, 30.617), 15);
}

function setMapEvent() {
  map.enableScrollWheelZoom();
  map.enableKeyboard();
  map.enableDragging();
  map.enableDoubleClickZoom();
}

function addClickHandler(target, window) {
  target.addEventListener("click", function () {
      target.openInfoWindow(window);
  });
}

function addMapOverlay() {
  var markers = [{
      content: "",
      title: "木兮地板湖北营销中心",
      imageOffset: {
          width: -46,
          height: -21
      },
      position: {
          lat: 30.605431,
          lng: 114.227969
      }
  }];
  for (var index = 0; index < markers.length; index++) {
      var point = new BMap.Point(
          markers[index].position.lng,
          markers[index].position.lat
      );
      var marker = new BMap.Marker(point, {
          icon: new BMap.Icon(
              "http://api.map.baidu.com/lbsapi/createmap/images/icon.png",
              new BMap.Size(20, 25), {
                  imageOffset: new BMap.Size(
                      markers[index].imageOffset.width,
                      markers[index].imageOffset.height
                  )
              }
          )
      });
      var label = new BMap.Label(markers[index].title, {
          offset: new BMap.Size(25, 5)
      });
      var opts = {
          width: 200,
          title: markers[index].title,
          enableMessage: false
      };
      var infoWindow = new BMap.InfoWindow(markers[index].content, opts);
      marker.setLabel(label);
      addClickHandler(marker, infoWindow);
      map.addOverlay(marker);
  }
}
//向地图添加控件
function addMapControl() {
  var navControl = new BMap.NavigationControl({
      anchor: BMAP_ANCHOR_TOP_LEFT,
      type: 0
  });
  map.addControl(navControl);
}
var map;
initMap();